+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3164 Prast (6562 P-L) Classification: Main-belt Asteroid          SPK-ID: 2003164 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1499529155801912 1.6865e-08   a 3.176155199530332 1.4094e-08 au q 2.699881467025575 5.4261e-08 au i 2.327811841057534 4.7622e-07 deg node 64.28432873473157 2.0987e-05 deg peri 57.39088235958964 2.2612e-05 deg M 176.494238469518 8.4863e-06 deg tp 2458186.870988320911 (2018-Mar-09.37098832) 4.5712e-05 TDB period 2067.526098125261 5.66 1.3761e-05 3.768e-08 d yr n .1741211394266953 1.1589e-09 deg/d Q 3.652428932035089 1.6207e-08 au   Orbit Determination Parameters    # obs. used (total)      2287      data-arc span      25007 days (68.47 yr)      first obs. used      1952-05-24      last obs. used      2020-11-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43366      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 14:46:25   Additional Information  Earth MOID = 1.71656 au   Jupiter MOID = 1.42952 au   T_jup = 3.182  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.35   n/a E2021B10   diameter diameter 19.242 km 0.383 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.083   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   3164 Prast (6562 P-L)          Discovered 1960-Sep-24 by PLS at Palomar These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA. Note: "planet" implies "minor planet" Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  6562 P-L = 1971 SW = 1972 VX = 1979 BX1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 04:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin